package com.zx.fitler;

import org.apache.commons.lang.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;

/**
 * 全局过滤器
 * @author jack.wu
 * @version 1.0
 * @date 2020-03-09
 */
//@Component
public class AuthGlobalFilter implements GlobalFilter, Ordered {

    /**
     * 主要鉴权逻辑
     */
    @Override
    public reactor.core.publisher.Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        String token = exchange.getRequest().getQueryParams().getFirst("token");
        if (StringUtils.isEmpty(token)){
            System.out.println("鉴权失败");
            exchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);
            return exchange.getResponse().setComplete();
        }
        // 下游执行
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;
    }
}
